Shawn Corvec

Global Real-time & Archived Sounding Explorer

Every weather-balloon (radiosonde) sounding ever released, anywhere on Earth, back more than a century. Blue stations reported within the last 24 h; purple ones launched off-hour (06/18Z) — usually a special release ahead of severe weather; teal are active, red are closed (archive only). Click a station, then pick Latest or Archive and a date. Recent launches load instantly; the first click on a station can take a few seconds to load, or longer for archived data which has to be downloaded (older soundings come from NOAA's global archive as one big per-station file, with a pulsing note showing progress) — then every other date at that station is instant. The full analysis — parcels, CAPE, shear, hodograph — runs entirely in your browser via SHARPlib compiled to WebAssembly. READ THIS FIRST! →  ·  US sounding gap report →
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⚡ Record watch — today's extremes

ranked vs each station's own day-of-year climatology · click a row to open the sounding

    full sounding analysis image
    ☁ Cloud layers

    Layers from RH (wrt ice below 0 °C), calibrated on 49,259 METAR cloud bases; teal band = dendritic growth zone (−12 to −18 °C). Method in the methodology.

    🏆 Station records

    🌫 Fog · frost · dew

    Probabilities are empirical (87,568 sounding–METAR pairs); FSI, bulk Richardson, frost point and the dew/frost logic are explained in the methodology.

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    Day-of-year climatology from this station's full radiosonde record (each point pools a ±10-day window): shaded bands = 10th–90th and 25th–75th percentile, line = median, and the outer envelope traces the all-time daily record high (red) and low (blue). The gold dot is the sounding on display.

    — UW page ↗

    Parcels

    Moist static energy

    Kinematics

    Composites

    Tropical

    Winter

    Thermo & moisture

    Levels

    Tip: click the skew-T to open a full-resolution card built from the un-thinned profile with every reportable wind level — the PNG button saves that same image. Data: latest soundings from the University of Wyoming archive (BUFR, mirrored 6×/day — UW sends no CORS headers); any historical date directly from NOAA IGRA v2 (first load per station can be tens of MB, then cached). Analysis: SHARPlib (K. Halbert, NWS SPC lineage) as WebAssembly — SB/ML/MU parcels, LI, DCAPE, effective inflow, Bunkers, SRH, effective shear, SCP/STP. Map: Leaflet & OpenStreetMap. Built by Claude (Anthropic's Claude Fable 5), directed by Shawn Corvec. Not for operational use.